Nailless paintbrush



w. SHULMAN AND MERGER; NAILLESS PAiNTBRUSH.

LICATION FILED DEC 13 l APP 921. %36g 1 6o V Patented Nov. 28, 1922.

w- I IN VENTOR v ATTORNEY Patented New. 28, 1922..

HARRY SHULMAN AND FRANK JOEBGER, OF BEQOKLYN, NEW YORK;

NAILLESS PAINTERUSH.

- Application filed December 13, 1921. Serial No. 521,981.

residing at Brooklyn, county of Kings and State of laew York, bothcitizens of the United States, have invented certain new and usefulImprovements in Nailless Paintbrushes, fully described and representedin the following specification and the accompanying drawings, forming apart of the same.

The present invention relates to a flat paint brush having a tuft ofbristles glued within one end of a ferrule and a handle fitted withinthe other end, and a flat ferrule thus enclosing the handle andbristletufts at their junction.

The improvement consists in pressing a row of studs, with a suitablemultiple pointed tool, from the metal of the ferrule into the substanceof the handle and bristle-tufts.

Such rows of studs very strongly engage the wood of the handle and thebristle-tufts, so that neither is liable to be loosened from theferrule.

the present improvement, the ferrule, when the parts of the brush areassembled subjected at the end embracing the handle to opposed rows oftapering punches which press rows of conical studs from the ferrule intthe substance of the handle upon both sides of the ferrulesinniltaneously.

1 L repetition of the operation upon the opposite end of the ferruleserves to press the studs into the tuft of bristles and the handle andtuft are thus securely and permanently locked .vithin the ferrule.

The invention will be understood by reference to the annexed drawing, inwhich Fig. 1. shows one side of a flat brush provided with theimprovement; Fig. 2 is a perspective view of the ferrule in readinessfor the application of the handle and bristles thereto; Fig. 3 is alongitudinal section on line 33 in Fig. 1 showing the indentation of thestuls into the substance of the handle and bristles; Fig. l is a sectionon line 45-4: in Fig. 1; and Fig. 5 is a perspective view of one of thedies for pressing the studs from the metal of the ferrule.

Fig. 1 shows the brush provided with the ferrule 65, the handle 7 andbristle-tuft 8.

The ferrule in the finished brush shown in Fig. 1 has two rows ofindentations 9 therein near its opposite ends; such indent ens formingstuds 10 which are shown in Fig. 3 pressed the wood and bristles respectively, near the opposite ends of th e ferrule. l1 igure shows one ofthe dies ll formed with a row of punches 12 upon one edge, such diesbeing used in pairs with the punches opposite to one another.

Such. dies can be mounted in an ordinary foot-press, and when the partsof the brush are assembled with the handle and "tuft insert-ed in theferrule which embraces the handle is placed between the dies, and theopposed rows of studs formed in the ferrule erinanently indenting theopposite sides of the handle as shown in Fig. 3. ld hen the ferrule isthus locked to the handle, the opposite end of the ferrule is subjectedto the same dies, and the studs pressed into the bristle-tufts, securingthem most effectively in the ferrule.

Two rows of studs are shown, to avoid crowding the holes together in asingle row, which would bring the holes so close to gether that thestuds would not operate in eividually in grasping the bristles. Toobtain an individual effect from each stud, the holes in the adjacentrows are alternated in their respective rows,v to' operate on thebristles at different distances from the ends of the bristles.

In the manufacture of brushes according to this invention it is commonto secure the shank of the bristles together with glue when fitted inthe ferrule, and glue is allowed to harden consideralfl before thestu.d:-; are indented from the ferrule into the opposite sides of thebrist e--tuft.-;.

The ferrule" is completely shaped as shown in Fig. 2 before the adjacentends of the handle and bristles are inserted therein; and the only laborrequired after the parts are assembled is to subject the oppositeendportions of the ferrule to the dies which form the studs therein; andthis operation is exceedingly brief, and operates much more effectivelyand accurately to lock the parts together than the nails heretoforeused; and the construction also greatly sti'lfens the ends of theferrule so that they cling closely to the wood and bristles.

It Will thus be seen that the invention reduces the cost of the brushand improves its eppearenee and quality, While securing a better finishand more permanent engagement of the bristles to the handle.

Having thus set forth the nature of the invention What is claimed hereinis:

1. The method of securing a fiat tuft 01" bristles Within a sheet-metalferrule, Which consists in gluing together one end of the bristlesassembled in the form desired for the tuft, and permitting said glue toharden then fitting a flat sided ferrule upon the said tuft and pressingroWs of studs from the metal of the ferrule into the substance of thecemented bristles.

2. The method of securing a flat tuft of HARRY SHULLW FRANK JULIE-1b

